TEM investigation of neutron irradiated and post irradiation annealed tungsten materials

Research output: Contribution to journalArticlepeer-review

Standard

TEM investigation of neutron irradiated and post irradiation annealed tungsten materials. / Van Renterghem, Wouter; Bonny, Giovanni; Terentyev, Dmitry.

In: Fusion Engineering & Design, Vol. 180, 113170, 19.05.2022, p. 1-13.

Research output: Contribution to journalArticlepeer-review

Bibtex - Download

@article{e95be53f69e648449e0d283187bb0379,
title = "TEM investigation of neutron irradiated and post irradiation annealed tungsten materials",
abstract = "In this paper, we present a transmission electron microscopy study of three tungsten grades subjected to neutron irradiation and post-irradiation annealing. The irradiation was performed at 600 .C up to 0.2 dpa and the microstructure was investigated after the irradiation, reported in a previous publication, as well as after the annealing at 800 .C and 1000 .C. The evolution of the radiation induced defects is characterized and the overall microstructural features are compared in three states: virgin-as irradiated – as annealed after irradiation. The annealing at 800 .C causes an increase in the loop and void densities and moderate increase in the mean sizes. An increase of the annealing temperature to 1000 .C causes a reduction of the loop density, while the loop size increases. Also the void density reduces, but not necessarily the void fraction. The peak of the void volume fraction is found around 800 .C, which coincides with the earlier reported experimental data on the void swelling peak under neutron irradiation.",
keywords = "Tungsten, Neutron irradiation, Post irradiation annealing, Transmission electron microscopy, Dislocation loops, Voids",
author = "{Van Renterghem}, Wouter and Giovanni Bonny and Dmitry Terentyev",
note = "Score=10",
year = "2022",
month = may,
day = "19",
doi = "10.1016/j.fusengdes.2022.113170",
language = "English",
volume = "180",
pages = "1--13",
journal = "Fusion Engineering & Design",
issn = "0920-3796",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - TEM investigation of neutron irradiated and post irradiation annealed tungsten materials

AU - Van Renterghem, Wouter

AU - Bonny, Giovanni

AU - Terentyev, Dmitry

N1 - Score=10

PY - 2022/5/19

Y1 - 2022/5/19

N2 - In this paper, we present a transmission electron microscopy study of three tungsten grades subjected to neutron irradiation and post-irradiation annealing. The irradiation was performed at 600 .C up to 0.2 dpa and the microstructure was investigated after the irradiation, reported in a previous publication, as well as after the annealing at 800 .C and 1000 .C. The evolution of the radiation induced defects is characterized and the overall microstructural features are compared in three states: virgin-as irradiated – as annealed after irradiation. The annealing at 800 .C causes an increase in the loop and void densities and moderate increase in the mean sizes. An increase of the annealing temperature to 1000 .C causes a reduction of the loop density, while the loop size increases. Also the void density reduces, but not necessarily the void fraction. The peak of the void volume fraction is found around 800 .C, which coincides with the earlier reported experimental data on the void swelling peak under neutron irradiation.

AB - In this paper, we present a transmission electron microscopy study of three tungsten grades subjected to neutron irradiation and post-irradiation annealing. The irradiation was performed at 600 .C up to 0.2 dpa and the microstructure was investigated after the irradiation, reported in a previous publication, as well as after the annealing at 800 .C and 1000 .C. The evolution of the radiation induced defects is characterized and the overall microstructural features are compared in three states: virgin-as irradiated – as annealed after irradiation. The annealing at 800 .C causes an increase in the loop and void densities and moderate increase in the mean sizes. An increase of the annealing temperature to 1000 .C causes a reduction of the loop density, while the loop size increases. Also the void density reduces, but not necessarily the void fraction. The peak of the void volume fraction is found around 800 .C, which coincides with the earlier reported experimental data on the void swelling peak under neutron irradiation.

KW - Tungsten

KW - Neutron irradiation

KW - Post irradiation annealing

KW - Transmission electron microscopy

KW - Dislocation loops

KW - Voids

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/49281756

U2 - 10.1016/j.fusengdes.2022.113170

DO - 10.1016/j.fusengdes.2022.113170

M3 - Article

VL - 180

SP - 1

EP - 13

JO - Fusion Engineering & Design

JF - Fusion Engineering & Design

SN - 0920-3796

M1 - 113170

ER -

ID: 7682254